Children's health
Learning Center
Hypothyroidism: Does it cause joint pain?
Hypothyroidism can cause muscle and joint problems, such as pain and stiffness.
High blood pressure and pregnancy: Know the facts
Concerned about high blood pressure during pregnancy? Find out what you can do to reduce your risk of complications.
Hiccups
Caused by spasms of your diaphragm that you can't control, hiccups are usually harmless. Rarely, hiccups may be a sign of an underlying medical problem.
Heavy menstrual bleeding
Learn about the causes and treatment of heavy menstrual periods.
Heartburn or heart attack: When to worry
Chest pain? Learn the potentially lifesaving difference between heartburn and a heart attack.
Heart palpitations
Know when and how feelings of a rapid, fluttering or pounding heartbeat are treated.
Heart attack symptoms: Know what's a medical emergency
Watch for these heart attack symptoms.
Headache
Headache: Symptom — Overview covers definition, possible causes of this painful symptom.
Guide to different tick species and the diseases they carry
Learn about different tick species and some of the diseases they may carry.
GERD: Can certain medications make it worse?
Certain medicines can make symptoms of gastroesophageal reflux disease (GERD) worse. Learn more.
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